Consider Two Gas Mixtures That Are Identical in Temperature

Multiple Choice

Consider two gas mixtures that are identical in temperature. The concentration of O₂ in mixture #1 is 20 mmol/L, and the concentration of O₂ in mixture #2 is 60 mmol/L. Which statement about the mixtures is true?

A) The partial pressure of O₂ in mixture #2 is three times higher than it is in mixture #1.
B) The partial pressure of O₂ in mixture #2 is 3 times lower than it is in mixture #1.
C) The percent of O₂ in mixture #2 is three times higher than it is in mixture #1.
D) The partial pressures of O₂ in both mixtures are the same.